Wolf COB-2 - Cascade Operation; Control Configuration; Directly Heated DHW Cylinder

Planning
26 | WOLF GmbH 3066501_201910
Moisture-resistantuewithtwo-ormultiple-draughtchimneys
1000
AB


Fig. 4.7 Twin duct chimney
A Open ue and room sealed operation
B Open ue operation
q Chimney T400
w Polypropylene system up to 120°C, CE
approved
e Shaft cover from the WOLF product range
r Stainless steel shaft cover from the WOLF
product range
4.7 Cascade operation
Up to four heat generators (with the same output) can be cascaded.
– Cascade 4 x COB-2-29 (18.9 - 115.2 kW) or
– Cascade 4 x COB-2-40 (27.4 - 154.0 kW)
4.7.1 Controlconguration
KM-2 cascade module installation and operating instructions for contractors
MM-2 mixer module installation and operating instructions for contractors
BM-2 programming unit installation and operating instructions for contractors
The heat generators have control PCBs with functions which are tailored to the WOLF control modules.
Conguration only in conjunction with a KM-2 cascade module.
The KM-2 cascade module controls:
– the header ow (based on the load)
– one mixer circuit
– one DHW cylinder circuit
The MM-2 mixer module controls:
– one additional mixer circuit
– one radiator circuit
A BM -2 programming unit with wall mounting base can be used as a remote control unit for each
mixer module.
4.7.2 Directly heated DHW cylinder
The directly heated DHW cylinder can be connected downstream of the hydraulic separation or via a low
loss header.
Cylinder heating is controlled via the cascade controller type KM-2, to which a cylinder primary pump and
the electronic cylinder sensor are connected.